using System;
using System.Collections;
using System.Data;
using System.Data.Common;
using System.Collections.Generic;

using WHC.Pager.Entity;
using Microsoft.Practices.EnterpriseLibrary.Data;
using Carmall.Entity;
using Carmall.IDAL;

namespace Carmall.DAL
{
	/// <summary>
	/// News 的摘要说明。
	/// </summary>
	public class News : BaseDAL<NewsInfo>, INews
	{
		#region 对象实例及构造函数

		public static News Instance
		{
			get
			{
				return new News();
			}
		}
		public News() : base("news","NewsID")
		{
		}

		#endregion

		/// <summary>
		/// 将DataReader的属性值转化为实体类的属性值，返回实体类
		/// </summary>
		/// <param name="dr">有效的DataReader对象</param>
		/// <returns>实体类对象</returns>
		protected override NewsInfo DataReaderToEntity(IDataReader dataReader)
		{
			NewsInfo newsInfo = new NewsInfo();
			SmartDataReader reader = new SmartDataReader(dataReader);
			
			newsInfo.NewsID = reader.GetInt32("NewsID");
			newsInfo.NewsCategory = reader.GetInt32("NewsCategory");
			newsInfo.Title = reader.GetString("Title");
			newsInfo.Content = reader.GetString("Content");
			newsInfo.Created = reader.GetDateTime("Created");
			newsInfo.Display = reader.GetInt32("Display");
			
			return newsInfo;
		}

		/// <summary>
		/// 将实体对象的属性值转化为Hashtable对应的键值
		/// </summary>
		/// <param name="obj">有效的实体对象</param>
		/// <returns>包含键值映射的Hashtable</returns>
        protected override Hashtable GetHashByEntity(NewsInfo obj)
		{
		    NewsInfo info = obj as NewsInfo;
			Hashtable hash = new Hashtable(); 
			
			hash.Add("NewsID", info.NewsID);
 			hash.Add("NewsCategory", info.NewsCategory);
 			hash.Add("Title", info.Title);
 			hash.Add("Content", info.Content);
 			hash.Add("Created", info.Created);
 			hash.Add("Display", info.Display);
 				
			return hash;
		}

    }
}